Drain fixture



Patented Sept. 29 1942 UNITED STATES PATENT OFFICE DRAIN FIXTURE Cashley A. Henry, Cincinnati, Ohio Application March 19, 1941, Serial No. 384,048

4 Claims.

My inventionrelates primarily to drain fixtures for use with a kitchen sink wherein the drain is at the bottom of a deep sink, ordinarily protected by a perforated strainer, and which has means for preventing the water flowing out of the drain and permitting the sink to be filled with water for washing kitchen utensils etc. I do not intend to limit myself, however, to a drain fixture for a sink, since as will be obvious, it may be used for other purposes.

In the normal type of sink drain the operator may close the drain and permit the sink to fill with water. However, no provision is ordinarily made to prevent the overflow of the water if it should be left running and no provision is made for controlling the maximum depth to which the sink may be filled.

The normal type of sink drain at present in use usually has a depression in which a strainer basket is situated. On the bottom of the strainer basket is usually placed the valve which seats on the end of the drain pipe, and provision is made on the valve itself and the seat for spacing the valve off of the seat when the basket is manually turned. The disadvantage of this type of construction is that the valve seat may be badly damaged and consequently leak, due to the action of the spacer directly on the valve seat.

It is an object of my invention to provide a drain fixture wherein the valve for shutting ofi the drain while mounted upon the bottom of the strainer basket and seating on the end of the drain pipe is spaced away or unseated by means which do not contact or tend to damage the valve seat.

' It is another object of my invention to provide a separate relief valve in conjunction with my drain fixture which automatically opens the drain to the sink when a certain predetermined maximum water level has been reached. I also provide adjusting means so that the predetermined water level may be varied to any desirable height.

It is a further object of my invention to provide a drain fixture having all of the above advantages which may be installed in the normal ceramic type of sink bowl having a single drain aperture at the bottom and which will not necessitate the use of a special type of sink bowl or the changing or reformation of any sink bowl.

A further object of my invention is to provide an automatic relief valve which is normally in the closed position but which is automatically opened when the water level reaches a certain height or which may be manually opened for cleaning purposes etc.

These and other objects of my invention which will be set forth hereinafter or will be apparent to one skilledin the art upon reading these specifications, I accomplish by that certain construc- 7 tion and arrangement of parts of which I shall now describe an exemplary embodiment. In the following description I will describe my invention as applied to a drain fixture for an ordinary type of kitchen sink. However, I do not desire to limit myself to this specific construction since other forms may be made by those skilled in the art without departing from the spirit of my invention.

Reference is now made to thedrawing which forms a part thereof and in which:

Figure 1 is a side elevationof my drain fixture as applied to a sink. L

Fig. 2 is a plan view of a fixture shown in Fig. 1, with portions broken away to showthe internal construction. I

Fig. 3 is a cross section taken on the section line 3 -3 of Fig. 2. v

Fig. 4 is a cross section taken on the section line 4-4 of Fig. 1. V

Briefly in the practice of my invention I provide spacing legs upon the bottom of my strainer basket which project from a position without the surface of the valve. These legs rest upon a perforated strainer surface having indentations spaced therein which permit the legs to sink below the surface of the strainer and the valve to seat on the end of the drain pipe when the basket is turned in a predetermined position;

Surrounding the drain pipe end I provide a passageway leading from the sink to at least a portion of the side of the drain pipe. There is an aperture in the wall or side of the drain pipe communicating with this passage which is normally closed by means of a gravity actuated valve seating in the wall. When the level of the water in the sink rises sufiiciently so that its weight is great enough to overcome the gravitational pressure holding the valve in its seat, the valve will open and permit water to drain through the passageway and the aperture in the side of the sink pipe into the pipe itself. In this way the elevation of the water will be lowered until its pressure has been lowered enough to permit the gravitational pull on the valve to again seat it.

Referring to the drawing I provide a sink drain fixture I having the usual flange 2, packing ring 3 and packing 4, which permits the fixture to be inserted through a hole in the bottom of the sink and held in place by means of the waterproof seal set by revolving the packing ring 3.

There is a basket space within this fixture and the basket 6 situated therein. Upon the bottom of the basket 6 is a valve 1 which seats in the valve seat 8 on the end of the drain pipe 9. The basket contains perforations in its side and bottom such as shown at Ia and 8a, toether with a key II! for revolving the basket.

Projecting downwardly from the bottom of the basket and outside of the valve I I provide legs Surrounding the end of the drain pipe portion 9 I provide a passageway I2 which completely surrounds the pipe end 8 and is enlarged at one side as at I3 so as to cover a portion of the pip portion 9.

Covering this annular passageway I provide an annular strainer I4 having perforations I5 I, I6; The"annular: strainer is positioned over the passageway I 2 asshown in Fig. 3. The strainer basket 6 rsts'by f means of the portion I I upon the annular strain-' and pressed-in depressions drain pipe portion 9 of the fixture I providean' aperture I! which is closed by a valve I8 seated therein. The valve I8 is mounted on the end of an arm I9 which in turn-is keyed or fastenedto a shaft 20. arm 2I projects which is a substantially horizontally disposed arm carrying'a threaded screw 22 upon which a weight 23 is mounted; The;

turning of the screw will move the;weight 23 away from or toward the shaft-26 and thus will increase or decrease the effect of the gravitational pullon the weight 23 upon the seating of the valve I8.

Within the drain pipe portion 9 army fixture,

I provide a. drain disc with'perforations 25 below the level of the valve seat 8. Projecting from the arm I9 and preferably integral therewith I provide an upwardly projecting finger 2?. Within the strainer disc 25 and so positioned that the finger 2'! will project therein I provide a slot 28. From the above it is apparent that upon lifting the finger-2'! by meansof the finger nail or some article the valve I8 may be unseated.

From the above description it will be apparent Upon the outer end; of the shaft an.

and replacing of the basket 6 within the aperture 5 will not in any way mar the valve I nor the valve seat 8 nor will any portion of the basket 6 contact the valve seat 8.

I have shown the weight 23 mounted in my fixture and adjustable by the turning of the screw 22 by means of its head screw 22a. I have also shown a sealing plug 36 in the side of the fixture. This is to assist in casting the fixture itself and may be eliminated if desired. While the passageway I2 is shown as increasing to the portion I3 it may, of course, be enlarged or may that by adjusting the position of the weight 23 upon the arm 2I by means of the screw the gravitational pull of the weight 23 upon the valve I8 may be originally regulated to such a degree as to secure the automatic opening of the valve I8 by the weight of the water within the fILa,

sink when it has reached a given level, at which time the water from the sink will flow through the annular strainer I4 down through the-p-as sage I3 and out through the drain. pipe As the water level in the sink lowers the pressure of the water upon the valve I8 will decrease and when it is raised the horizontal force upon the valve l8 will increase and the valve I3 will close and thus maintain a predetermined water level within the sink. From the above it is also apparent that the manual manipulation of the taper around the drain pipe 9. However, by sloping this passageway as I have shown the tendency for material to stick in the pipes is reduced.

It is understood that different forms of my preferred form may be made without departing from the spirit of my invention. Having thus described my invention, what I claim as new and desireto secure by Letters Patent is:

1. In a sink having a drain pipe, a'manually operated valve seating in the'end of said drain pipe, a passageway leading from said sink to the side of said pipe, an aperture in the side of said pipe adjacent said passageway,'a valve located within said pipe seating in and closing said aperture, said valve being urged against said seat by gravity.

2. In a sink having a drain pipe, amanually operated valve seating in the end of said drain pipe, a passageway leading from said sink to the side of said pipe, an aperture in the side of said pipe adjacent said passageway, a valve located within said pipe seating in and closing'said aper ture, said valve being urged against said seat by the gravitational pull on a weight "slidingly mounted on an arm without said pipe and operatively. connected to'said valve. I In a sink having a drain pipe, a valve for closing said drain pipe consisting of a perforated straining basket and a Valveon the bottom seating on said pipe. end, a passageway surrounding the said pipe end and at least a portion of said pipe wall, a perforated strainer surrounding said pipe end and covering said passageway, indentations in said strainer, feet projecting from the bottom of said straining .basket into said indentations so as to permit the seating of said valve on said pipe end only when said feet are in said indentations, an aperture in said pipe communi- 1 J eating with said passageway, a valve within said pipe urged against said aperture by a weight, the action of said weight on saidvalve being ad- J'ustable.

4. In a sink having a drain pipe, a valve for V closing said drain pipe consisting of a perforated straining basket and a valve on the bottom seating on said pipe end, a passageway surrounding the said pipe end and at least aportion of said pipe wall, a perforated strainer surrounding said pipe end and covering said passageway, indentations in said strainer, feet projecting from the bottom of said straining basket into said indentations so as to permit the'seating of said valve on said pipe end only when said feet are in said indentations, an aperture in said pipe communicating with said passagewaya valve within said pipe urged against said aperture by a weighhthe action of said weight onisaid'valve being adjustable, and manual means for opening said last basket ,6 by means of the-key Iflor the removal mentioned valve.

CASHLEY A. HENRY. 

